Cov khoom siv lim dej diatomaceous muaj cov qauv microporous zoo, kev ua haujlwm adsorption, thiab kev tiv thaiv compressive, uas tsis tsuas yog ua rau cov kua lim kom ua tiav qhov sib piv zoo ntawm cov dej ntws, tab sis kuj lim cov khoom me me uas raug tshem tawm, ua kom pom tseeb. Diatomaceous av yog cov av ntawm cov seem diatom ib lub cell qub. Nws cov yam ntxwv suav nrog lub teeb yuag, porous, muaj zog heev, hnav-resistant, rwb thaiv tsev, rwb thaiv tsev, adsorption, thiab filling, ntawm lwm yam khoom zoo heev.

Lub ntiaj teb diatomaceous yog cov av qeeg ntawm cov seem diatom ib lub cell. Nws cov yam ntxwv suav nrog lub teeb yuag, qhov ntxeem tau, muaj zog siab, tiv taus hnav, rwb thaiv tsev, rwb thaiv tsev, nqus tau, thiab sau, ntawm lwm yam khoom zoo heev. Muaj kev ruaj khov tshuaj lom neeg zoo. Nws yog ib qho khoom siv tseem ceeb hauv kev lag luam rau kev rwb thaiv tsev, sib tsoo, lim dej, nqus tau, tiv thaiv kev coagulation, rhuav tawm, sau, thiab nqa. Nws tuaj yeem siv dav hauv kev lag luam xws li metallurgy, chemical engineering, hluav taws xob, kev ua liaj ua teb, chiv, cov ntaub ntawv tsim kho thiab cov khoom rwb thaiv tsev. Nws kuj tseem siv tau ua cov khoom siv ua haujlwm hauv kev lag luam rau yas, roj hmab, ceramics, papermaking, thiab lwm yam lag luam.

Cov khoom siv lim dej diatomaceous earth tau muab faib ua cov khoom qhuav, cov khoom calcined, thiab cov khoom flux calcined raws li cov txheej txheem ntau lawm sib txawv.
① Cov khoom qhuav
Cov khoom siv av qhuav silica uas tau lim, ua ntej ziab, thiab tsoo yog ziab ntawm qhov kub ntawm 600-800 ° C thiab tom qab ntawd tsoo. Cov khoom no muaj qhov loj me me heev thiab tsim nyog rau kev lim dej kom raug. Nws feem ntau siv ua ke nrog lwm cov khoom siv lim dej. Cov khoom qhuav feem ntau yog daj daj, tab sis kuj muaj xim dawb thiab xim grey daj.

② Khoom siv Calcined
Cov khoom siv raw ntawm lub ntiaj teb diatomaceous uas tau ntxuav, qhuav, thiab tsoo raug pub rau hauv lub qhov cub rotary, calcined ntawm qhov kub ntawm 800-1200 ° C, thiab tom qab ntawd tsoo thiab muab qib kom tau txais cov khoom calcined. Piv nrog cov khoom qhuav, qhov permeability ntawm cov khoom calcined yog ntau dua peb zaug. Cov khoom calcined feem ntau yog xim liab dawb.

③ Cov khoom siv flux calcined
Tom qab ntxuav, ziab, thiab zom, cov khoom siv diatomaceous av raw ntxiv nrog me me ntawm cov tshuaj fluxing xws li sodium carbonate thiab sodium chloride, thiab calcined ntawm qhov kub ntawm 900-1200 ° C. Tom qab zom thiab ntsuas qhov loj me ntawm cov khoom me me, cov khoom flux calcined tau txais. Qhov permeability ntawm cov khoom flux calcined tau nce ntxiv ntau, uas yog ntau dua 20 npaug ntawm cov khoom qhuav. Cov khoom calcined ntawm flux feem ntau yog dawb, thiab thaum Fe2O3 cov ntsiab lus siab lossis cov tshuaj flux tsawg, lawv zoo li xim liab dawb.

Cov teeb meem tseem ceeb ntawm cov lim dej diatomaceous earth yog:

1. Tsis muaj peev txheej. Kev tsim cov khoom siv lim dej diatomaceous earth xav tau cov khoom siv diatomaceous zoo nrog cov ntsiab lus diatom siab. Txawm hais tias Tuam Tshoj muaj cov khoom siv diatomaceous earth ntau, feem ntau yog cov av diatomaceous nruab nrab mus rau qib qis, uas nyuaj rau ua kom tau raws li qhov yuav tsum tau ua;

2. Tus nqi tsim khoom kim heev. Cov txheej txheem tsim khoom ntawm diatomaceous earth yog qhov nyuaj heev, thiab ua ke nrog tus nqi siab ntawm cov khoom siv diatomaceous earth zoo, tus nqi tsim khoom ntawm diatomaceous earth lim dej hauv Suav teb tau tswj hwm ntawm qib siab;

3. Tus nqi lim dej qeeb qeeb thiab qhov ceev ntawm cov khoom loj yog siab. Ntxiv ntau ntxiv raws li nws qhov zoo feem ntau tsis ua tau raws li qhov xav tau, thiab ntxiv ntau ntxiv yuav ua rau tus nqi nce ntxiv. Qee tus neeg xav tsim cov khoom lag luam diatomaceous av nrog qhov ceev tsawg, tab sis vim muaj kev txwv hauv cov khoom sib xyaw thiab cov qauv ntawm cov khoom siv raw, cov txiaj ntsig zoo tsis tau ua tiav txog tam sim no;

4. Kev ruaj khov tshuaj lom neeg tsis zoo tagnrho. Cov ntsiab lus ntawm cov khoom tsis zoo xws li hlau thiab calcium hauv diatomaceous av yog qhov siab thiab muaj nyob rau hauv lub xeev sib cais, yog li nws cov nqi yaj yog siab. Thaum lim ntau yam dej haus thiab dej cawv, cov hlau yaj ntau tuaj yeem cuam tshuam rau qhov saj thiab saj ntawm cov khoom.